NEVADA

HUMBOLT COUNTY

STAR PEAK BASIN

FOSSIL HILL MEMBER

FAVRET FORMATION

STAR PEAK GROUP

LATE ANISIAN STAGE

LOWER MID TRIASSIC EPOCH

MIDDLE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: EURYAPSIDA COLBERT, 1945

SUPERORDER: SAUROPTERYGIA OWEN 1860

GRANDORDER: EOSAUROPTERYGIA emend RIEPPEL, 1994

ORDER: NOTHOSAURIFORMES STORRS, 1991

SUBORDER: EUSAUROPTERYGIA TSCHANZ, 1989

INFRAORDER: NOTHOSAUROIDEA BAUR, 1889

Superfamily: NOTHOSAURIA Baur, 1889

Family: NOTHOSAURIDAE Baur, 1889

Incertae sedis

Gen. sp indet.

INFRACLASS: NEODIAPSIDA BENTON, 1985

ORDER: THALATTOSAURIDAE MERRIAM, 1904

SUBORDER: THALATTOSAUROIDEA MERRIAM, 1904

Family: THALATTOSAURIDAE Merriam, 1904

Gen. sp indet.

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NEVADA

HUMBOLT COUNTY

WEST HUMBOLDT RANGE

STAR CANYON

PRIDA FORMATION

ANISIAN STAGE

LOWER MID TRIASSIC EPOCH

MIDDLE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: HUENEOSAURIA MAISCH & MATZKE, 2000

ORDER: MIXOSAUROIDEA (BAUR, 1887)

Family: MIXOSAURIDAE Baur, 1887

Subfamily: PHALARODONTINAE Maisch & Matzke, 2001

Phalarodon nordenskioldii = Cymbospondylus (?) natans
= Mixosaurus natans

Family: CYMBOSPONDYLIDAE Huene, 1948

Cymbospondylus petrinus
= Chonespondylus grandis

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NEVADA

HUMBOLT COUNTY

WEST HUMBOLDT RANGE

SOUTH FORK OF AMERICAN CANYON

FOSSIL HILL MEMBER

PRIDA FORMATION

MIDDLE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: HUENEOSAURIA MAISCH & MATZKE, 2000

ORDER: MIXOSAUROIDEA (BAUR, 1887)

Family: MIXOSAURIDAE Baur, 1887

Subfamily: PHALARODONTINAE Maisch & Matzke, 2001

Phalarodon nordenskioldii = *Phalarodon fraasi
= Mixosaurus fraasi

_____________________________________________________________________________________

NEVADA

HUMBOLT COUNTY

WEST HUMBOLDT RANGE

FISCHER CANYON

FOSSIL HILL MEMBER

PRIDA FORMATION

MIDDLE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1904

INFRACLASS: NEODIAPSIDA BENTON, 1985

NEODIAPSIDA: INCERTAE SEDIS

OR AMNIOTA: INCERTAE SEDIS

MAGANORDER: ICHTHYOPTERYGIA BAUR, 1887 emend nova

SUPERORDER: EOICHTHYOSAURIA MOTANI, 1999

GRANDORDER: ICHTHYOSAURIA EMEND BLAINVILLE, 1835

MICRORDER: HUENEOSAURIA MAISCH & MATZKE, 2000

ORDER: MIXOSAUROIDEA (BAUR, 1887)

Family: MIXOSAURIDAE Baur, 1887

Subfamily: PHALARODONTINAE Maisch & Matzke, 2001

Phalarodon nordenskioldii = Phalarodon fraasi
= Mixosaurus fraasi

_____________________________________________________________________________________

NEVADA

HUMBOLT COUNTY

SOUTHERN SIDE OF BUFFALO MOUNTIAN

LOWER MEMBER

NATCHEZ PASS FORMATION

EARLY CARNIAN STAGE

LOWER LATE TRIASSIC EPOCH

LATE TRIASSIC

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: DIAPSIDA OSBORN, 1903

INFRACLASS: NEODIAPSIDA BENTON, 1985

INFRACLASS: NEODIAPSIDA BENTON, 1985

ORDER: THALATTOSAURIDAE MERRIAM, 1904

SUBORDER: CLARAZISAUROIDEA HOFFSTETTER, 1955

Family: CLARAZIIDAE Peyer, 1936

Genus nova